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    <title>Document</title>

    <link rel="stylesheet" href="./index.css">
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<body>
    <!-- 整体盒子 -->
    <div class="box">
        <!-- 标题区 -->
        <span class="sectionTitle">
            <span class="ngcontent-c7">地域及可用区</span>
            <ul class="helpLinks">
                <li class="helpItem">
                    <a href="#" target="_blank">如何选择地域</a>
                </li>
            </ul>
        </span>
        <!-- 内容区 -->
        <span class="sectionContent">
            <!-- 地区范围 -->
            <div class="regionSection">
                <!-- 范围按钮 -->
                <div class="region-btn">
                    <!-- 选择地区 -->
                    <div class="regionSelector">
                        <!-- 下拉按钮 -->
                        <button class="dropdown-trigger">
                          <span></span>
                          <i class="downIcon"></i>
                        </button>
                        <div class="outerDrop">
                          <div class="dropSection">
                            <div class="region">
                              <div class="title">亚太</div>
                              <div class="regionGroup clearfix">
                                <ul class="regionList clearfix">
                                  <li class="item"><button><span>华北1 (青岛)</span></button></li>
                                  <li class="item"><button><span>华北1 (青岛)</span></button></li>
                                  <li class="item"><button><span>华北1 (青岛)</span></button></li>
                                  <li class="item"><button><span>华北1 (青岛)</span></button></li>
                                  <li class="item"><button><span>华北1 (青岛)</span></button></li>
                                </ul>
                              </div>
                            </div>
                          </div>
                        </div>
                    </div>
                    <!-- 可用区按钮 -->
                    <span class="ant-btn">
                        <ul class="btnGroup clearfix">
                            <li class="btn-item">
                                <button class="selectBtn active">随机分配</button>
                            </li>
                            <li class="btn-item">
                                <button class="selectBtn">可用区C</button>
                            </li>
                            <li class="btn-item">
                                <button class="selectBtn">可用区B</button>
                            </li>
                        </ul>
                    </span>
                </div>
                <!-- 内容提示 -->
                <div class="sectionTip">
                    <span class="ngcontent-c11">不同地域的实例之间内网互不相通；选择靠近您客户的地域，可降低网络时延、提高您客户的访问速度。</span>
                </div>
            </div>
        </span>
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